Treeing-support



CHARLES H. POPE, OF BROOKTON, MASSACHUSETTS, ASSIGNOR TO VILLIAM B.ARNOLD, OF ABINGTON, MASSACHUSETTS.

TRI-:I :lNc-SUPPORT.

SPECIFICATION forming part of Letters PatentNo. 608,993, dated August 9,1898. Appiianonneacanbezo,1897. serrano. 655,769. @modem To 'all whom, tmay concern: Y

Be it known that I, CHARLEsH. Porn, o Brockton, county of Plymouth,State of Massachusetts, have invented an Improvement inTreeing-Supports, of Whichthe following description, in connection withVthe accompanying drawings, is a specificatiomlike letters on thedrawings representing like parts.

My invention is a treeing-support for use in manufacturing boots andshoes, and is particularly intended for use with multipart or dividedlasts, rigidly at one of its parts, while the rest of the last oranother part thereof' isffree to be moved as may be required."

As heretofore provided, the treeing-support has held the toe and heelportions of the last both rigidly, so that movementof either por` tionthereof could not take place while the last was clamped on its support.It is desirable, however, inthe manipulationofthe kind of lasts inquestion that one part-niore particularly1 the toe portion of thelast-should be capable of movement when desired without requiring thatthe entire Vlast should be removed from its treeing-support, Y Thepresent in vention,accordingly,is provided'to meet this requirement, andI have herein shown.

the support as adapted to holdthe heel portion of the lastrigidly, whilethetoe portion; is freely movable; but I do not restrict my-` self inthis regard, inasmuch as this feature of my invention resides insecuring any part ofl a multipart last in'rigid position, so as topermit another part of the'last to be capable of movement. p Y

As herein shown, I have providedan eX- pansible clamp adapted `toenterthe' usual spindle-hole 4of the lastand a wedge-rod operable in theleg part of the treeing-support, so as to expand the clamp,this rodhaving a yielding connection with an operating member and being providedwith means normally tending to raise it out of engagement with theclamp. i

The details of my inventionwill be more fully pointed out in the courseof the following description, reference being had to the accompanyingdrawings, and the invention will be defined in the appended claimswhereby the lastmay be held In the drawings, which show a preferredembodiment of my invention, Figure lis a central vertical section of myinvention, showing it in operative holding engagement with a usualtwo-part last. Fig. 2 is afragmentary perspective view of the upper endof the treeing-support. Fig. 3 is a fragmentary vertical longitudinalsection showing a modification. f Y Y For clearness of understanding Ihave herein illustrated my invention in connection vwith an Arnold lasthaving its toe part a and heel part d hinged together at c, so as to becapable of free swinging movement relatively to each other, the heel Znof the last being provided With a usual spindle-hole b', fitted with ausual thimble b2.

My improved`treeingsupport D, of iron or any other suitable. materialdesired, is provided with a leg part d at one end and at its other endis shaped, as required, to fit it to the machine or other situationWhere it is to be used, it beingherein shown as cutaway at d d2forholding in the usual frame for the purpose.

At the outer end of the leg portion d Ihave provided a holding deviceadapted to grip or clamp the particular part of the last which is to beheld rigid by the support, this holding V,device being herein shown inthe form of an eXpansible clamp d3, screwed or otherwise fastened in orsecured or formed on the treeing-support, comprising two parts d4 d5,provided with a central recess d6, tapered at its outer end.

Anexpanding device in the form of a rod dl, having a conical end orwedge d8, reciprocates in the leg d and the clamp d8, so as to expandthe latter by engagement of the Wedge dsiwith thekconical recess d6 asthe rod is pulled inwardly.A

At its outer end the rod-dhas a head or shoulder df, shown as adjustablymounted on the rod by aset-screw d10, this head serving to retain aAspring d, surrounding the rod d?,

and held at its opposite end against thev closed end d1? of an operatingmember d13,'which incloses the rod and spring and extendsbeyond the bodyof the tjreeingV-support, where it is provided with a stirrup-dll,pivoted atfd15 on IOO the lower end of the operating member. In practicethe stirrup CZM will be connected to the usual treadle mounted in theframewhich holds the treeing-support, so that by depressing the treadlethe last will be instantly locked in clamped position on thetreeingsupport.

Between end flanges all and a removable annulus (117 I provide a springdlg, which constitutes a preferred means for automatically restoring theparts to their normal unlocked ,or unclamped positions.

The spring d, as above described, constitutes a compensator or yieldingconnection between the rod d7 or clamp-actuator and the operating memberC113, so that although the latter may be uniformly moved a certaindistance in its operation, yet the clamping-rod will be moved only sucha distance as may be required for operating the clamp, it beingunderstood that in some instances it will be necessary to expand theclamp more than at other times in order to firmly and rigidly lock theengaged portion of the last thereby-as, for instance,when the thimblesb2 vary slightly in size or are Worn.

By the term compensator, which I em`- ploy in the claims, I mean adevice which compensates for inequalities in the sizes of theSocket-thimble or other varying conditions by permitting the clamp to beactuated only sufiiciently for properly clamping, yet permitting theoperating member to move still further, if necessary, to complete itsusual throw of movement. For example, the operating member may be builtto move an inch; but a defective or unusual thimble b2 may cause theclamp to wedge fast when the rod 17 has moved a quarter of an inch, andthe compensator, therefore, is any mechanism that will permit thismovement of a quarter of an inch and then allow the clamping device tostop there in its clamped position, while permitting the operatingmember to continue its movement for the rest of the inch.

I have herein shown the operating member and its connected parts asmounted in a recess d19 in the treeing-support, this being a compact andconvenient form of my invention; but it will be understood that I am notrestricted to such preferred embodiment, inasmuch as my inventionincludes any form and location of operating means for a holding deviceand that the latter may also be varied, provided it is capable ofcooperating with a last so as to removably clamp the latter or arequired part thereof onto a treeing-support.

In order to prevent relative rotation of the treeing-support and thelast, I provide on one a recess or cavity and on the other a projectionadapted to register therewith when the last is in clamped position andhave herein shown a recess d20 in the leg of the support and a pin b3projecting from the last to enter the recess. Viewing Fig. l, it will beobserved that the last does not extend exactly at right angles to thetreeing-support, but is slightly oblique thereto. For certain purposes,particularly for the convenience of the operators, it is desirable thatthis Obliquity should be considerable, and accordingly I have shown inFig. 3 a provision for attaining this object, where it will be observedthat the rod d7 is hinged intermediate its length at d, in which casethe perforation in the leg of the support is provided with an offset orenlargement, as shown at 61.22, in order to permit of the slightlongitudinal movement of the rod which is necessary to ensure properclamping action of its head d8.

As shown in Fig. 3, I prevent rotation of the last on thetreeing-support by making the interior of the thimble or socket b2square to correspond to a square clamp C123, held rigidly in the leg ofthe treeing-support by means of pins (F4, said clamp being otherwiseprecisely the same as shown in Fig. 2.

In operation when it is desired to mount a last on my treeing-supportall that it is necessary to do is to place the lastin position with itsspindle-hole b or other recess over the expansible clamp d3 or toproperly locate the last so that whatever means may be provided thereonfor the purpose may coperate with a holding device on the support andthen operate the treadle or other means to move the operating member d13and actuate the clamp, which movement instantly locks the last or, inthe case of a multipart last, locks one part thereof rigidly onto thetreeing-support, the last being held against relative rotation on thesupport by the interlocking of the pin b3 and recess d20.

The spring du or other yielding connection provided between theclamp-actuator dT and the operating member dlg causes the clamp to beexpanded as far as may be necessary and no farther. Instantly upon thereleasing of the treadle or other operating means the spring dlgautomatically releases the parts from their clamping position.

From the above description it will be understood that while the last asa whole is held firmly against removal from the treeing-support, yetonly one part thereof is maintained rigid, and the other part or partsof the multipart last are free to be turned on their hinge, as required.

While I have herein described in detail the various parts of myinvention, I wish it clearly understood that my invention is not limitedto. these details, but that my invention is intended to include anyholding means whatever Which coperate with and between a last and atreeing-support for holding rigid one of the parts of a multipart last,while leaving another of the parts thereof freely movable, any means forpreventing relative rotation of the last on its support, any means foroperating the holding device so as to fix or release the last on thesupport, any compensator or device to accommodate the operatingmechanism to the varying requirements of the IOO clamp or other holdingdevice, and any means for automatically restoring the parts to theirnormal non-clamping positions.

Having fully described my invention, what I claim, and desire to secureby Letters Patent, is-

l. A treeing-support, adapted to coperate with and hold amultipartflast, said support having heel-holding means for rigidlysupporting the heel of said last While leaving the toe portion of thelast freely movable, substantially as described.

2. A treeing-support, adapted to cooperate with and hold a multipartlast, said support having a holding device for rigidly supporting one ofthe parts of the last While leaving another of the parts thereof freelymovable,

vsubstantially as described.

3. The combination with a treeing-support and a last, of holding meansfor rigidly securing the treeing-support to the heel of the last, saidmeans being confined in its operation to the heel part of the last, andcoperating means on the abutting parts of the heel and the leg portionof said support for preventing relative rotation of the lastV andsupport, substantially as described.

A. A treeing-support, provided with an expansible clamp adapted to beinserted in a socket in one end of a last, means moving in- Wardlytoward the treeing-support to expand said clamp into clamping positionand an operating device for pulling said expanding means into clampingas described.

5; A treeing-support, provided With an expansible clamp adapted to beinserted in a socket in one end of a last, a Wedging device having itssmaller end extending toward the treeing-support to Wedge said clampinto clamping position, and means to operate said device, substantiallyas described.

6. A treeing-support, provided with an expansible clamp adapted to beinserted in a socket in one end of a last, an expanding device to expandsaid clamp, and operating mechanism for said expanding device, saidoperating mechanism including compensating means to accommodate themechanism to varying requirements of the expansible clamp, substantiallyas described.

7. A treeing-sup port, provided Witha holding device adapted to engageand hold a last, and operating mechanism for said holding device, saidoperating mechanism including a compensator intermediate its ends,substantially as described.

8. A treeing-support, provided With an exposition, substantiallypansible clamp, a reciprocating rod for expanding said clamp, anoperating member therefor, and a yielding connection between said rodand member, substantially asI described.

9. A treeing-s upport,provided with a holding device to engage the heelof a last, and means to actuate said device to clamp the last to thesupport, said means comprising a reciprocating rod, provided with ahead, an operating member inclosing said rod, and a spring on said rodheld under tension by said head'and said operating member, substantiallyas described.

lO. A treeing-support,provided With a holding device to engage the heelof the last, and means to actuate said device to clamp the last to thesupport, said means comprising a reciprocating rod, provided with ahead, an operating member inclosing said rod, and a spring on said rodheld under tension by said head and said operating member,said memberbeing retained in a recess provided in the leg of the support, and aspring normally holding said member inwardly Within said recess,substantially as described.

11. A treeing-support, provided at the end of its leg portion With aholding device adapted to be inserted in a recess provided'there- .forin the heel of a last, means to clamp said heel rigidly to the support,and automatic meansnormally tending to release said parts from clampingposition, substantially as described.

12. A treeing-support provided at the end of its leg portion with aholding device adapted to engage and hold a last, and operatingmechanism for said holding device including f1 a rod reciprocable insaid support, said support having an oblique end to hold the last in anoblique direction, and said rod extending a portion of its length inthegeneral IOO direction of the support and the rest of its lengthsubstantially perpendicular to the last,

substantially as described;

13. A treeing-support provided with a holding device adapted to engageand hold a last,

and an operating-rod for said holding device reciprocable in saidsupport, said rod being hinged intermediate its lengthwithin saidsupport, substantially as described.

In testimony whereof I have signed my IIO name to this specification inthe presence of tWo subscribing Witnesses.

CHARLES H. POPE. Witnesses:

GEo. H. MAXWELL, FREDERICK L. EMERY.

